<template>
  <div>
    <!-- 图片上传组件辅助 -->
    <el-upload
      ref="upload"
      class="avatar-uploader quill-img"
      action=""
      name="file"
      :show-file-list="false"
      :on-error="uploadError"
      :before-upload="quillImgBefore"
      :on-change="handleFileChange"
      :http-request="submitFileForm"
      accept=".jpg,.jpeg,.png,.gif"
    />

    <!-- 富文本组件 -->
    <quill-editor
      ref="quillEditor"
      v-model="content"
      class="editor"
      :options="editorOption"
      @blur="onEditorBlur($event)"
      @focus="onEditorFocus($event)"
      @change="onEditorChange($event)"
    />
  </div>
</template>
<script>
import { getToken } from '@/utils/auth'
import { Upload } from '../../api/ctrls.js'
const toolbarOptions = [
  ['bold', 'italic', 'underline', 'strike'], // 加粗 斜体 下划线 删除线
  ['blockquote', 'code-block'], // 引用  代码块
  [{ list: 'ordered' }, { list: 'bullet' }], // 有序、无序列表
  [{ indent: '-1' }, { indent: '+1' }], // 缩进
  [{ size: ['small', false, 'large', 'huge'] }], // 字体大小
  [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
  [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
  [{ align: [] }], // 对齐方式
  ['clean'], // 清除文本格式
  ['link', 'image', 'video'] // 链接、图片、视频
]

import { quillEditor, Quill } from 'vue-quill-editor'
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'

import ImageResize from 'quill-image-resize-module' // 添加
Quill.register('modules/imageResize', ImageResize) // 添加
export default {
  name: 'Editor',
  components: { quillEditor },
  props: {
    /* 编辑器的内容 */
    value: {
      type: String
    },
    /* 图片大小 */
    maxSize: {
      type: Number,
      default: 4000 // kb
    }
  },
  data() {
    return {
      content: this.value,
      uploadImgUrl: '',
      editorOption: {
        theme: 'snow', // or 'bubble'
        placeholder: '请输入内容',
        modules: {
          imageResize: { // 添加
            displayStyles: { // 添加
              backgroundColor: 'black',
              border: 'none',
              color: 'white'
            },
            modules: ['Resize', 'DisplaySize', 'Toolbar'] // 添加
          },
          toolbar: {
            container: toolbarOptions,
            handlers: {
              image: function(value) {
                if (value) {
                  // 触发input框选择图片文件
                  document.querySelector('.quill-img input').click()
                } else {
                  this.quill.format('image', false)
                }
              }
            }
          }
        }
      },
      uploadImgUrl: process.env.VUE_APP_BASE_API2 + "/ctrls/Upload?type='img'&file_type=''", // 上传的图片服务器地址

      headers: {
        TOKEN: getToken()
      }

    }
  },
  watch: {
    value: function() {
      this.content = this.value
    }
  },
  methods: {
    onEditorBlur() {
      // 失去焦点事件
    },
    onEditorFocus() {
      // 获得焦点事件
    },
    onEditorChange() {
      // 内容改变事件
      this.$emit('input', this.content)
    },
    handleFileChange(file, fileList) {
      const existFile = fileList.slice(0, fileList.length - 1).find(f => f.name === file.name)
      // if (existFile) {
      //   this.$message.error('当前文件已经存在!')
      //   fileList.pop()
      // }
      this.fileList = fileList
    },
    // 这里的方法是请求最后一次
    debounce(fn, waits) {
      if (this.timer) {
        clearTimeout(this.timer)
        this.timer = null
      }
      this.timer = setTimeout(() => {
        fn.apply(this, arguments) // 把参数传进去
      }, waits)
    },
    async submitFileForm(e) {
      // this.$refs.upload.submit()
      const formData = new FormData()
      formData.append('files', e.file)
      const { success, data } = await Upload(formData)
      if (success) {
        // 消息提示
        this.$message({
          message: '文件上传成功',
          type: 'success',
          duration: 1500
        })
        this.quillImgSuccess(data)
      } else {
        this.$message.error('文件上传失败')
      }
    },
    // 富文本图片上传前
    quillImgBefore(file) {
      const fileType = file.type
      if (fileType === 'image/jpeg' || fileType === 'image/png' || fileType === 'image/gif' || fileType ===
          'image/bmp') {
        return true
      } else {
        this.$message.error('请插入图片类型文件(jpg/jpeg/png)')
        return false
      }
    },
    quillImgSuccess(data) {
      const quill = this.$refs.quillEditor.quill
      // 获取光标所在位置
      const length = quill.getSelection().index
      // 插入图片  data器返回的图片地址
      quill.insertEmbed(length, 'image', data)
      // 调整光标到最后
      quill.setSelection(length + 1)
    },
    // 富文本图片上传失败
    uploadError(e) {
      console.log(e)
      // loading动画消失
      this.$message.error('图片插入失败')
    }
  }
}
</script>
<style>
  ​ .editor {
    white-space: pre-wrap !important;
    line-height: normal !important;
    /* height: 192px; */
  }

  .ql-editor {
    min-height: 450px;
  }

  .quill-img {
    display: none;
  }

  .ql-snow .ql-tooltip[data-mode="link"]::before {
    content: "请输入链接地址:";
  }

  .ql-snow .ql-tooltip.ql-editing a.ql-action::after {
    border-right: 0px;
    content: "保存";
    padding-right: 0px;
  }

  ​ .ql-snow .ql-tooltip[data-mode="video"]::before {
    content: "请输入视频地址:";
  }

  ​ .ql-snow .ql-picker.ql-size .ql-picker-label::before,
  .ql-snow .ql-picker.ql-size .ql-picker-item::before {
    content: "14px";
  }

  .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
  .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
    content: "10px";
  }

  .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
  .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
    content: "18px";
  }

  .ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
  .ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
    content: "32px";
  }

  ​ .ql-snow .ql-picker.ql-header .ql-picker-label::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item::before {
    content: "文本";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
    content: "标题1";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
    content: "标题2";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
    content: "标题3";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
    content: "标题4";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
    content: "标题5";
  }

  .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
  .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
    content: "标题6";
  }

  ​ .ql-snow .ql-picker.ql-font .ql-picker-label::before,
  .ql-snow .ql-picker.ql-font .ql-picker-item::before {
    content: "标准字体";
  }

  .ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
  .ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
    content: "衬线字体";
  }

  .ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
  .ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
    content: "等宽字体";
  }

  .ql-container {
    max-height: 500px;
    overflow: scroll;
  }
</style>
